/*
 * Copyright (C) 2005 - 2013 MaNGOS <http://www.getmangos.com/>
 *
 * Copyright (C) 2008 - 2013 Trinity <http://www.trinitycore.org/>
 *
 * Copyright (C) 2010 - 2013 ProjectSkyfire <http://www.projectskyfire.org/>
 *
 * Copyright (C) 2011 - 2013 ArkCORE <http://www.arkania.net/>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */

#ifndef ARKCORE_DESTINATION_HOLDER_H
#define ARKCORE_DESTINATION_HOLDER_H

#include "Define.h"
#include "Timer.h"

class WorldObject;
class Map;

#define TRAVELLER_UPDATE_INTERVAL  300

template<typename TRAVELLER>
class DestinationHolder
{
    TimeTrackerSmall i_tracker;
    uint32 i_totalTravelTime;
    uint32 i_timeElapsed;
    bool i_destSet;
    float i_fromX, i_fromY, i_fromZ;
    float i_destX, i_destY, i_destZ;

public:
    DestinationHolder () :
            i_tracker(TRAVELLER_UPDATE_INTERVAL), i_totalTravelTime(0), i_timeElapsed(0), i_destSet(false), i_fromX(0), i_fromY(0), i_fromZ(0), i_destX(0), i_destY(0), i_destZ(0)
    {
    }

    uint32 SetDestination (TRAVELLER &traveller, float dest_x, float dest_y, float dest_z, bool sendMove = true);
    void GetDestination (float &x, float &y, float &z) const
    {
        x = i_destX;
        y = i_destY;
        z = i_destZ;
    }
    bool UpdateExpired (void) const
    {
        return i_tracker.Passed();
    }
    void ResetUpdate (uint32 t = TRAVELLER_UPDATE_INTERVAL)
    {
        i_tracker.Reset(t);
    }
    uint32 GetTotalTravelTime (void) const
    {
        return i_totalTravelTime;
    }
    void IncreaseTravelTime (uint32 increment)
    {
        i_totalTravelTime += increment;
    }
    void ResetTravelTime ()
    {
        i_totalTravelTime = 0;
    }
    bool HasDestination (void) const
    {
        return i_destSet;
    }
    float GetDestinationDiff (float x, float y, float z) const;
    bool HasArrived (void) const
    {
        return (i_totalTravelTime == 0 || i_timeElapsed >= i_totalTravelTime);
    }
    bool UpdateTraveller (TRAVELLER &traveller, uint32 diff, bool micro_movement = false);
    uint32 StartTravel (TRAVELLER &traveller, bool sendMove = true);
    void GetLocationNow (const Map * map, float &x, float &y, float &z, bool is3D = false) const;
    void GetLocationNowNoMicroMovement (float &x, float &y, float &z) const;          // For use without micro movement
    float GetDistance3dFromDestSq (const WorldObject &obj) const;

private:
    void _findOffSetPoint (float x1, float y1, float x2, float y2, float offset, float &x, float &y);
};
#endif
